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  <script>
    // 1.翻转数组
    var arr = ['易烊千玺', '李钟硕', '车银优', '宋江'];
    arr.reverse();
    console.log(arr);

    // 2.冒泡排序
    var arr1 = [23, 4, 13, 5, 3, 73];
    arr1.sort(function (a, b) {
      return a - b; // 升序的顺序排序
      // return b - a; // 降序的顺序排序
    });
    console.log(arr1);
  </script>
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